United States

Top 49 largest US Companies in the Telecom Services industry by Market Cap

This is the list of the largest public listed companies in the Telecom Services industry from the United States by market capitalization with links to their reference stock.

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Top Telecom Services Companies from the United States as of Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
1 T-Mobile US, Inc. $273.36 B United States US Communication Services US Telecom Services
2 AT&T Inc. $204.21 B United States US Communication Services US Telecom Services
3 Verizon Communications Inc. $183.79 B United States US Communication Services US Telecom Services
4 Vonage Holdings Corp. $37.41 B United States US Communication Services US Telecom Services
5 Zoom Video Communications, Inc. $23.77 B United States US Communication Services US Telecom Services
6 AST SpaceMobile, Inc. $15.47 B United States US Communication Services US Telecom Services
7 Frontier Communications Parent, Inc. $9.13 B United States US Communication Services US Telecom Services
8 InterDigital, Inc. $5.75 B United States US Communication Services US Telecom Services
9 United States Cellular Corporation $5.44 B United States US Communication Services US Telecom Services
10 GTT Communications, Inc. $5.23 B

(Jan. 1, 2025)

 United States US Communication Services US Telecom Services
11 Lumen Technologies, Inc. $4.72 B United States US Communication Services US Telecom Services
12 Telephone and Data Systems, Inc. $4.06 B United States US Communication Services US Telecom Services
13 Iridium Communications Inc. $3.44 B United States US Communication Services US Telecom Services
14 Globalstar, Inc. $3.15 B United States US Communication Services US Telecom Services
15 Cogent Communications Holdings, Inc. $2.50 B United States US Communication Services US Telecom Services
16 Gogo Inc. $2.04 B United States US Communication Services US Telecom Services
17 IDT Corporation $1.76 B United States US Communication Services US Telecom Services
18 Radius Global Infrastructure, Inc. $1.48 B

(July 1, 2023)

 United States US Communication Services US Telecom Services
19 Liberty Latin America Ltd. $1.30 B United States US Communication Services US Telecom Services
20 Loral Space & Communications Inc. $1.28 B

(June 1, 2022)

 United States US Communication Services US Telecom Services
21 Altice USA, Inc. $1.04 B United States US Communication Services US Telecom Services
22 ORBCOMM Inc. $915.8 M

(Aug. 1, 2021)

 United States US Communication Services US Telecom Services
23 Shenandoah Telecommunications Company $791.0 M United States US Communication Services US Telecom Services
24 Cincinnati Bell Inc. $788.2 M

(Sept. 3, 2021)

 United States US Communication Services US Telecom Services
25 Cable One, Inc. $773.0 M United States US Communication Services US Telecom Services
26 Ribbon Communications Inc. $739.7 M United States US Communication Services US Telecom Services
27 Consolidated Communications Holdings, Inc. $559.2 M

(Jan. 1, 2025)

 United States US Communication Services US Telecom Services
28 Anterix Inc. $471.7 M United States US Communication Services US Telecom Services
29 Spok Holdings, Inc. $366.8 M United States US Communication Services US Telecom Services
30 Ooma, Inc. $365.5 M United States US Communication Services US Telecom Services

Top Telecom Services Companies from the United States as of Jul. 01, 2025

1. T-Mobile US

Company Profile: T-Mobile US, Inc.
Market Cap (USD): $273.36 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

2. AT&T

Company Profile: AT&T Inc.
Market Cap (USD): $204.21 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

3. Verizon

Company Profile: Verizon Communications Inc.
Market Cap (USD): $183.79 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

4. Vonage Holdings Corp.

Company Profile: Vonage Holdings Corp.
Market Cap (USD): $37.41 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

5. Zoom Video Communications, Inc.

Company Profile: Zoom Video Communications, Inc.
Market Cap (USD): $23.77 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

6. AST SpaceMobile, Inc.

Company Profile: AST SpaceMobile, Inc.
Market Cap (USD): $15.47 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

7. Frontier Communications Parent, Inc.

Company Profile: Frontier Communications Parent, Inc.
Market Cap (USD): $9.13 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

8. InterDigital, Inc.

Company Profile: InterDigital, Inc.
Market Cap (USD): $5.75 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

9. United States Cellular Corporation

Company Profile: United States Cellular Corporation
Market Cap (USD): $5.44 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

10. GTT Communications, Inc.

Company Profile: GTT Communications, Inc.
Market Cap (USD): $5.23 B (Jan. 1, 2025)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

11. Lumen Technologies, Inc.

Company Profile: Lumen Technologies, Inc.
Market Cap (USD): $4.72 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

12. Telephone and Data Systems, Inc.

Company Profile: Telephone and Data Systems, Inc.
Market Cap (USD): $4.06 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

13. Iridium Communications Inc.

Company Profile: Iridium Communications Inc.
Market Cap (USD): $3.44 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

14. Globalstar, Inc.

Company Profile: Globalstar, Inc.
Market Cap (USD): $3.15 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

15. Cogent Communications Holdings, Inc.

Company Profile: Cogent Communications Holdings, Inc.
Market Cap (USD): $2.50 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

16. Gogo Inc.

Company Profile: Gogo Inc.
Market Cap (USD): $2.04 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

17. IDT Corporation

Company Profile: IDT Corporation
Market Cap (USD): $1.76 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

18. Radius Global Infrastructure, Inc.

Company Profile: Radius Global Infrastructure, Inc.
Market Cap (USD): $1.48 B (July 1, 2023)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

19. Liberty Latin America Ltd.

Company Profile: Liberty Latin America Ltd.
Market Cap (USD): $1.30 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

20. Loral Space & Communications Inc.

Company Profile: Loral Space & Communications Inc.
Market Cap (USD): $1.28 B (June 1, 2022)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

21. Altice USA, Inc.

Company Profile: Altice USA, Inc.
Market Cap (USD): $1.04 B
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

22. ORBCOMM Inc.

Company Profile: ORBCOMM Inc.
Market Cap (USD): $915.8 M (Aug. 1, 2021)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

23. Shenandoah Telecommunications Company

Company Profile: Shenandoah Telecommunications Company
Market Cap (USD): $791.0 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

24. Cincinnati Bell Inc.

Company Profile: Cincinnati Bell Inc.
Market Cap (USD): $788.2 M (Sept. 3, 2021)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

25. Cable One, Inc.

Company Profile: Cable One, Inc.
Market Cap (USD): $773.0 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

26. Ribbon Communications Inc.

Company Profile: Ribbon Communications Inc.
Market Cap (USD): $739.7 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

27. Consolidated Communications Holdings, Inc.

Company Profile: Consolidated Communications Holdings, Inc.
Market Cap (USD): $559.2 M (Jan. 1, 2025)
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

28. Anterix Inc.

Company Profile: Anterix Inc.
Market Cap (USD): $471.7 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

29. Spok Holdings, Inc.

Company Profile: Spok Holdings, Inc.
Market Cap (USD): $366.8 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

30. Ooma, Inc.

Company Profile: Ooma, Inc.
Market Cap (USD): $365.5 M
Country: United States
Sector: US Communication Services
Industry: US Telecom Services

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